Pulmonary Vascular Disease: Pulmonary Vascular Disease I |

Prevalence of Right Ventricular Non-Compaction: Single-Center Experience FREE TO VIEW

Sara Paulus, PA-C; Ann Zeidler, RN; Michelle Cicona, BSN; Dianne Zwicke, MD
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Saint Luke's Medical Center, Milwaukee, WI

Copyright 2016, American College of Chest Physicians. All Rights Reserved.

Chest. 2016;150(4_S):1164A. doi:10.1016/j.chest.2016.08.1273
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SESSION TITLE: Pulmonary Vascular Disease I

SESSION TYPE: Original Investigation Poster

PRESENTED ON: Wednesday, October 26, 2016 at 01:30 PM - 02:30 PM

PURPOSE: Non-compaction of the left ventricle, characterized by prominent trabeculae with deep intertrabecular recesses in the ventricle, is well documented. The existence and prevalence of non-compaction of the right ventricle is essentially unknown and considered rare. However, in our clinical experience, with frequent detailed echo imaging of the right ventricle along with 3D imaging, RV non-compaction seems more prevalent than originally thought.

METHODS: We prospectively reviewed echoes of patients evaluated in the pulmonary hypertension (PH) clinic from May 2014 through March 2016.

RESULTS: A total of 75 patients (mean age 65 [range 27-91]; 63 females (84.0%)) were found to have non-compaction of the right ventricle using 3D echo imaging. Sixteen of the 75 patients (21.3%) had biventricular non-compaction. Fifty three of 75 patients (71.0%) had WHO group I PAH, 1 patient (1.3%) had CTEPH, 17 patients (22.7%) had WHO group II PH (5 systolic dysfunction; 12 diastolic dysfunction), 1 patient (1.3%) had WHO group III PH (sleep disordered breathing), and 3 patients had no PH.

CONCLUSIONS: Based on our observations, RV non-compaction is more prevalent than originally thought. In our experience, careful assessment of the RV with 3D echo imaging has been the most useful tool to detect RV non-compaction. 3D echo imaging allows detection of increased trabeculae in the RV and differentiation from RV hypertrophy or the normal RV anatomy in patients. The significance of RV non-compaction in patient symptomatology and prognosis is unknown.

CLINICAL IMPLICATIONS: Identifying RV non-compaction is important in the treatment of PAH patients as it may be mistaken for RVH resulting in over treatment with PAH vasodilator therapies.

DISCLOSURE: The following authors have nothing to disclose: Sara Paulus, Ann Zeidler, Michelle Cicona, Dianne Zwicke

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